Why convert TN3 to PNG?
.tn3 is an obsolete Atari ST high-resolution bitmap from the late 1980s that no current software opens natively outside specialist tools. .png is a lossless, universally supported format and the correct archival target for a 1-bit monochrome bitmap like TN3.
How to convert TN3 to PNG
RECOIL OPEN-SOURCE
Run recoil2png yourfile.tn3 in a terminal; RECOIL writes yourfile.png in the same directory. For batch conversion run recoil2png *.tn3.
XnView MP FREE
Enable 'Show all graphic formats' in Settings > General, open the .tn3 file, then use File > Export and choose PNG as the output format.
About these formats
.TN3
Tiny High-Resolution Image (Atari ST)
A TN3 file is a "Tiny" compressed bitmap from the Atari ST computer - the high-resolution monochrome variant (640x400, black-and-white). To open one today, use RECOIL or XnView MP, both…
Open .TN3 details →
.PNG
Portable Network Graphics
A PNG (Portable Network Graphics) is a lossless raster image format. Every modern OS, browser, and image app opens PNGs natively - just double-click. The most common questions are not about…
Open .PNG details →Quality & what to watch
- TN3 is always monochrome (1-bit, 640x400). The output PNG will be a 1-bit or 8-bit grayscale image - there is no color to recover.
- The conversion is fully lossless. TN3's RLE compression expands to the original bitmap, and PNG compresses it again without any loss.
- The
.tnyextension is sometimes used as a generic alternative to.tn3. XnView MP with 'Show all graphic formats' will open both.
